Trigonometry (11th Edition) Clone

Published by Pearson
ISBN 10: 978-0-13-421743-7
ISBN 13: 978-0-13421-743-7

Chapter 3 - Review Exercises - Page 136: 44a

Answer

$A$

Work Step by Step

Both the sine and cosine functions are defined for any real number $x$. Thus, the domain of both the sine and cosine functions is: $(-\infty, +\infty)$.
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